package top.codehelen.service;

import com.baomidou.mybatisplus.extension.service.IService;
import top.codehelen.pojo.Users;

/**
 * @Classname UsersService
 * @Description UsersService
 * @Date 2021/5/12 10:24 上午
 * @Created by helen
 */
public interface UsersService extends IService<Users> {
    boolean selectUserNameIsExist(String userName);
}
